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(DL) Delta Air Lines 2021 On-Time Performance Rating

Date Range:

01-Dec-2025 to 31-Jan-2026

(MIA) Miami International Airport

Miami, FL, US

(SLC) Salt Lake City International Airport

Salt Lake City, UT, US

On-Time Performance Chart

(using rounded numbers)
On-Time
45
73%
Late
6
10%
Very Late
5
8%
Excessive
5
8%
Cancelled
0
0%
Diverted
1
2%

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed
61
Total Delays ( > 1 min )
32
Codeshares
0
Average Delay (min.)
20.3125
Standard Deviation
20.2
Min
0
Max
87

DL 2021 On-Time Performance Details

Overall Rating
3.8 of 5
Good
Percentage On-Time 74%
Average Delay Time 20.3125 min
FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 3.8 shows that this flight has on-time performance characteristics better than 75% of all other flights in the FlightStats database.
On-Time Performance Rating
2.9 of 5
Average
Percentage On-Time 74%
This flight has an on-time performance of 74%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 58% of other flights.
Delay Performance
4.7 of 5
Very Good
Average Delay Time 20.3125 min
This flight has an average delay of 20.3125 minutes with a standard deviation of 20.2 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 93% of other flights.